Filter
Top Products
Stylus
Color
Sefvice
Manual
Operating Principles
2.3.2.4
Paper Feed Motor Drive Circuit
The paper feed motor for this printer drives the following mechanisms:
■
Paper feed mechanism
■
Paper pickup mechanism
■ Pump mechanism
Driver
IC
SLA7041MS
(XC14)
drives the paper feed motor by a constant current. The operation
principle is same as the carriage motor drive circuit. But the driving method is different for paper
feed and the pump.
Table 2-9. Paper Feed Motor Drive Modes
Mode
Phase Excitation Drive Frequency
Paper feed
2-2 phase or 2WI -2 phase
391 or 1600
pps
Pump drive
2-2 phase
300 or 1800
pps
E05A98
SLA7041 MS
C2)
(IC14)
PFCLK
PFSTB
41
CLKA
44
m
An
R
CLKB
STBA
STBB
A
a
a
G1
PFVRF
●
REF A
(PB8-PB13)
-
14
E
54
●
REF B
PFHLD —
a
9
+
RSA
-10
I
●
RSB
I
c1
I
B
NPN Tr
E
p
(Q27,28)
1
1
82
11 3
18 4
>
5
m
C9*
+
—
J
Figure 2-23. Paper Feed Motor Drive Circuit Diagram
(CN7)
Rev. A
2-19